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279 lines
11 KiB
C
279 lines
11 KiB
C
// SoftEther VPN Source Code
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// Cedar Communication Module
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//
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// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
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//
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// Copyright (c) 2012-2014 Daiyuu Nobori.
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// Copyright (c) 2012-2014 SoftEther VPN Project, University of Tsukuba, Japan.
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// Copyright (c) 2012-2014 SoftEther Corporation.
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//
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// All Rights Reserved.
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//
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// http://www.softether.org/
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//
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// Author: Daiyuu Nobori
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// Comments: Tetsuo Sugiyama, Ph.D.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// version 2 as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License version 2
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
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// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
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//
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//
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// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
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// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
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// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
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// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
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// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
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// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
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// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
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// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
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// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
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// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
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// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
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// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
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// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
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// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
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//
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// USE ONLY IN JAPAN. DO NOT USE THIS SOFTWARE IN ANOTHER COUNTRY UNLESS
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// YOU HAVE A CONFIRMATION THAT THIS SOFTWARE DOES NOT VIOLATE ANY
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// CRIMINAL LAWS OR CIVIL RIGHTS IN THAT PARTICULAR COUNTRY. USING THIS
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// SOFTWARE IN OTHER COUNTRIES IS COMPLETELY AT YOUR OWN RISK. THE
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// SOFTETHER VPN PROJECT HAS DEVELOPED AND DISTRIBUTED THIS SOFTWARE TO
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// COMPLY ONLY WITH THE JAPANESE LAWS AND EXISTING CIVIL RIGHTS INCLUDING
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// PATENTS WHICH ARE SUBJECTS APPLY IN JAPAN. OTHER COUNTRIES' LAWS OR
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// CIVIL RIGHTS ARE NONE OF OUR CONCERNS NOR RESPONSIBILITIES. WE HAVE
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// NEVER INVESTIGATED ANY CRIMINAL REGULATIONS, CIVIL LAWS OR
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// INTELLECTUAL PROPERTY RIGHTS INCLUDING PATENTS IN ANY OF OTHER 200+
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// COUNTRIES AND TERRITORIES. BY NATURE, THERE ARE 200+ REGIONS IN THE
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// WORLD, WITH DIFFERENT LAWS. IT IS IMPOSSIBLE TO VERIFY EVERY
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// COUNTRIES' LAWS, REGULATIONS AND CIVIL RIGHTS TO MAKE THE SOFTWARE
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// COMPLY WITH ALL COUNTRIES' LAWS BY THE PROJECT. EVEN IF YOU WILL BE
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// SUED BY A PRIVATE ENTITY OR BE DAMAGED BY A PUBLIC SERVANT IN YOUR
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// COUNTRY, THE DEVELOPERS OF THIS SOFTWARE WILL NEVER BE LIABLE TO
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// RECOVER OR COMPENSATE SUCH DAMAGES, CRIMINAL OR CIVIL
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// RESPONSIBILITIES. NOTE THAT THIS LINE IS NOT LICENSE RESTRICTION BUT
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// JUST A STATEMENT FOR WARNING AND DISCLAIMER.
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//
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//
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// SOURCE CODE CONTRIBUTION
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// ------------------------
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//
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// Your contribution to SoftEther VPN Project is much appreciated.
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// Please send patches to us through GitHub.
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// Read the SoftEther VPN Patch Acceptance Policy in advance:
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// http://www.softether.org/5-download/src/9.patch
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//
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//
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// DEAR SECURITY EXPERTS
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// ---------------------
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//
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// If you find a bug or a security vulnerability please kindly inform us
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// about the problem immediately so that we can fix the security problem
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// to protect a lot of users around the world as soon as possible.
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//
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// Our e-mail address for security reports is:
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// softether-vpn-security [at] softether.org
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//
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// Please note that the above e-mail address is not a technical support
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// inquiry address. If you need technical assistance, please visit
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// http://www.softether.org/ and ask your question on the users forum.
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//
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// Thank you for your cooperation.
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//
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//
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// NO MEMORY OR RESOURCE LEAKS
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// ---------------------------
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//
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// The memory-leaks and resource-leaks verification under the stress
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// test has been passed before release this source code.
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// Logging.h
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// Header of Logging.c
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#ifndef LOGGING_H
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#define LOGGING_H
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// Port number for HTTP monitoring
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#define LOG_HTTP_PORT 80
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#define MAX_LOG_SIZE 1073741823ULL
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typedef char *(RECORD_PARSE_PROC)(RECORD *rec);
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// Packet log structure
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struct PACKET_LOG
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{
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CEDAR *Cedar;
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struct PKT *Packet;
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char *SrcSessionName;
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char *DestSessionName;
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bool PurePacket; // Packet not cloned
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bool PurePacketNoPayload; // Packet not cloned (without payload)
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SESSION *SrcSession;
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bool NoLog; // Not to write a log
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};
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// Log save options of the HUB
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struct HUB_LOG
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{
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bool SaveSecurityLog; // To save the security log
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UINT SecurityLogSwitchType; // Switching type of security log
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bool SavePacketLog; // To save the packet log
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UINT PacketLogSwitchType; // Switching type of packet log
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UINT PacketLogConfig[NUM_PACKET_LOG]; // Packet log settings
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};
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// Record
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struct RECORD
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{
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UINT64 Tick; // Time
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RECORD_PARSE_PROC *ParseProc; // Parsing procedure
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void *Data; // Data
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};
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// LOG object
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struct LOG
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{
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LOCK *lock; // Lock
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THREAD *Thread; // Thread
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char *DirName; // Destination directory name
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char *Prefix; // File name
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UINT SwitchType; // Switching type of log file
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QUEUE *RecordQueue; // Record queue
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volatile bool Halt; // Halting flag
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EVENT *Event; // Event for Log
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EVENT *FlushEvent; // Flash completion event
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bool CacheFlag;
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UINT64 LastTick;
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UINT LastSwitchType;
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char LastStr[MAX_SIZE];
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UINT64 CurrentFilePointer; // The current file pointer
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UINT64 MaxLogFileSize; // Maximum log file size
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UINT CurrentLogNumber; // Log file number of the current
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bool log_number_incremented;
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};
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// ERASER object
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struct ERASER
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{
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LOG *Log; // Logger
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UINT64 MinFreeSpace; // Disk space to start deleting files
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char *DirName; // Directory name
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volatile bool Halt; // Halting flag
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THREAD *Thread; // Thread
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bool LastFailed; // Whether deletion of the file failed at the end
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EVENT *HaltEvent; // Halting event
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};
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// List of files that can be deleted
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typedef struct ERASE_FILE
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{
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char *FullPath; // Full path
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UINT64 UpdateTime; // Updating date
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} ERASE_FILE;
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// SYSLOG object
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struct SLOG
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{
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LOCK *lock; // Lock
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SOCK *Udp; // UDP socket
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IP DestIp; // Destination IP address
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UINT DestPort; // Destination port number
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char HostName[MAX_HOST_NAME_LEN + 1]; // Host name
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UINT64 NextPollIp; // Time of examination of the IP address at the end
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};
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// Function prototype
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LOG *NewLog(char *dir, char *prefix, UINT switch_type);
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void FreeLog(LOG *g);
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void LogThread(THREAD *thread, void *param);
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void WaitLogFlush(LOG *g);
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void LockLog(LOG *g);
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void UnlockLog(LOG *g);
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void InsertRecord(LOG *g, void *data, RECORD_PARSE_PROC *proc);
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void InsertStringRecord(LOG *g, char *str);
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void InsertUnicodeRecord(LOG *g, wchar_t *unistr);
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char *StringRecordParseProc(RECORD *rec);
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bool MakeLogFileName(LOG *g, char *name, UINT size, char *dir, char *prefix, UINT64 tick, UINT switch_type, UINT num, char *old_datestr);
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void MakeLogFileNameStringFromTick(LOG *g, char *str, UINT size, UINT64 tick, UINT switch_type);
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void WriteRecordToBuffer(BUF *b, RECORD *r);
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void SetLogDirName(LOG *g, char *dir);
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void SetLogPrefix(LOG *g, char *prefix);
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void SetLogSwitchType(LOG *g, UINT switch_type);
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bool PacketLog(HUB *hub, SESSION *src_session, SESSION *dest_session, PKT *packet, UINT64 now);
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char *PacketLogParseProc(RECORD *rec);
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UINT CalcPacketLoggingLevel(HUB *hub, PKT *packet);
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UINT CalcPacketLoggingLevelEx(HUB_LOG *g, PKT *packet);
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char *GenCsvLine(TOKEN_LIST *t);
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void ReplaceForCsv(char *str);
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char *PortStr(CEDAR *cedar, UINT port, bool udp);
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char *TcpFlagStr(UCHAR flag);
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void WriteSecurityLog(HUB *h, char *str);
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void SecLog(HUB *h, char *fmt, ...);
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void SiSetDefaultLogSetting(HUB_LOG *g);
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void DebugLog(CEDAR *c, char *fmt, ...);
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void HubLog(HUB *h, wchar_t *fmt, ...);
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void ServerLog(CEDAR *c, wchar_t *fmt, ...);
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void SLog(CEDAR *c, char *name, ...);
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void WriteHubLog(HUB *h, wchar_t *str);
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void HLog(HUB *h, char *name, ...);
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void NLog(VH *v, char *name, ...);
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void IPCLog(IPC *ipc, char *name, ...);
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void PPPLog(PPP_SESSION *p, char *name, ...);
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void IPsecLog(IKE_SERVER *ike, IKE_CLIENT *c, IKE_SA *ike_sa, IPSECSA *ipsec_sa, char *name, ...);
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void EtherIPLog(ETHERIP_SERVER *s, char *name, ...);
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void WriteServerLog(CEDAR *c, wchar_t *str);
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void ALog(ADMIN *a, HUB *h, char *name, ...);
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void CLog(CLIENT *c, char *name, ...);
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void WriteClientLog(CLIENT *c, wchar_t *str);
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ERASER *NewEraser(LOG *log, UINT64 min_size);
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void FreeEraser(ERASER *e);
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void ELog(ERASER *e, char *name, ...);
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void EraserThread(THREAD *t, void *p);
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void EraserMain(ERASER *e);
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bool CheckEraserDiskFreeSpace(ERASER *e);
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int CompareEraseFile(void *p1, void *p2);
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LIST *GenerateEraseFileList(ERASER *e);
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void FreeEraseFileList(LIST *o);
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void PrintEraseFileList(LIST *o);
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void EnumEraseFile(LIST *o, char *dirname);
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SLOG *NewSysLog(char *hostname, UINT port);
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void SetSysLog(SLOG *g, char *hostname, UINT port);
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void FreeSysLog(SLOG *g);
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void SendSysLog(SLOG *g, wchar_t *str);
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void WriteMultiLineLog(LOG *g, BUF *b);
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char *BuildHttpLogStr(HTTPLOG *h);
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void MakeSafeLogStr(char *str);
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void AddLogBufToStr(BUF *b, char *name, char *value);
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#endif // LOGGING_G
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// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
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// Department of Computer Science has dozens of overly-enthusiastic geeks.
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// Join us: http://www.tsukuba.ac.jp/english/admission/
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